The errno.h header file defines the type error_t, unfortunately this
is a common type name that may be defined in user code. For at least GCC
we can work around this by telling errno that the error_t is already
defined.
Unfortunately, some toolchains don't define the same errno codes that
are used fairly consistently on Linux based platforms, which means they
also don't match the errno codes used in the retarget layer.
If a user includes errno.h after mbed.h, the errno codes can be
redefined incorrectly.
Adding an include of errno.h in mbed.h forces the order to be fixed.
CPUID base register is available for Cortex-M processors only.
Cortex-A devices have Main ID Register, which can be used in future to
get processor info.
Add the POSIX fcntl call, but only implementing F_SETFL and F_GETFL
for O_NONBLOCK, so users can control the blocking flag of streams
with only the integer file descriptor.
Necessary to portably control the blockingness of the console:
int flags = fcntl(STDOUT_FILENO, F_GETFL);
fcntl(STDOUT_FILENO, F_SETFL, flags | O_NONBLOCK);
There was no way to check current blocking state, so no way to modify
and restore status.
Also have default FileHandle::set_blocking() used by real files return a
correct error code when asked for non-blocking, and success when asked
for blocking.
These were minor omissions that are required to implement POSIX fcntl
properly.
fixup! Add `is_blocking()` method to FileHandle
Some platforms have interface chips with hardware flow control
enabled by default. This commit adds configurable flow control to
STDOUT.
Usage:
* Define pin names STDIO_UART_RTS for Rx-flow-control and
STDIO_UART_CTS for Tx-flow-control.
* Set target.console-uart-flow-control. Valid options are:
null, RTS, CTS, and RTSCTS.
- Move macro definition to mbed_toolchain.h
- Remove double underscores from macro which are reserved.
- Fix macro for IAR until compiler flags to disable path are added again.
Sleep manager tracing strips the path from filenames and uses the result as an
identifier to track drivers that unlock/lock sleep tracing. Replace the function
that strips the path from the string, replace this function with a new macro,
__FILENAME__ which performs the same action in a compiler specific manner.
- GCC_ARM, use __builtin_strrchr which is optimized out at compile time.
- ARM, use __MODULE__ which returns the filename without path.
- IAR, specifiy the --no_path_in_file_macros compiler flag.
The atomic functions preserve volatile semantics - they only perform the
accesses specified. Add the volatile qualifier to the value pointer to
reflect this. This does not change existing caller code - it's
equivalent to adding a const qualifier to indicate we don't write to
a pointer - it means people can pass us qualified pointers without
casts, letting the compile check const- or volatile-correctness.
This is consistent with C11 <stdatomic.h>, which volatile-qualifies its
equivalent functions.
Note that this useage of volatile has nothing to do with the atomicity -
objects accessed via the atomic functions do not need to be volatile.
But it does permit these calls to be used on objects which have been
declared volatile.
Martin Kojtal
Cruz Monrreal
Christopher Haster
Deepika
Bartek Szatkowski
Kevin Bracey
ccli8
James Wang
Marcus Chang
Senthil Ramakrishnan
Yossi Levy
amq
Cruz Monrreal
Steven Cartmell